Figure 43. Loa Utilization For Au3/Tu3 Conversion - Alcatel 1850 TSS-320 Technical Handbook

For other LO tributaries:
–
Path Layer Adaptation to the Path Protection Sub-layer: Sm/SmP_A
Sm/SmP_A_Sk
SSF insertion (on TSF detection)
SSD insertion (on TSD detection)
Sm/SmP_A_So
No information is inserted
–
Path Protection Sub-layer Termination: SmP_TT
SmP_TT_Sk
SSF detection
TSF insertion (on SSF detection)
SmP_TT_So
no information is inserted
3.4.2.1.1 AU3/TU3 conversion function (not operative in current release)
Lower order processing subsystem, in addition, provides the capability to convert AU3 into TU3 and
viceversa.
This in order to convert VC3 HO tributaries, carried over a OC-N signal, and map them into a structured
HO VC4 tributary, carried over STM-N signal, allowing SONET/SDH conversion.
STM - N
HOA used for AU3/TU3 conversion
OC - N
Technical Handbook Common
Functional Description
SDH PORT CARD
TTF
HVC
TTF
HVC
RX
Sk
RX
Sk
HPC HPC
HPC HPC
VC4 VC4
UNIVERSAL
MATRIX
Used for HO
VC4 XC
HPA
HPT
HPA
LVC
HPT
LVC
Sk RX before
Sk
Sk RX before
Sk
HOA CARD
HPA
HPT
HPA LVC
Sk RX before LPC LPC
Sk
Sk
For LO For LO
For LO For LO
VC3 XC VC3 XC
VC3 XC VC3 XC
Sonet PORT CARD
TTF
HVC
TTF
HVC
HPC HPC
HPC HPC
RX
Sk
RX
Sk
VC3 VC3
UNIVERSAL
MATRIX
Used for HO
VC3 XC

Figure 43. LOA utilization for AU3/TU3 conversion.

SDH PORT CARD
TTF
HVC
TTF
HVC
TX
So
TX
So
VC4 VC4
HPA
HPA
LVC
LVC
TX after
So
TX after
So
HOA CARD
HPA
LVC HPA
TX after
So
LPC LPC So
HOA used for AU3/TU3 conversion
Sonet PORT CARD
TTF
HVC
TTF
HVC
TX
So
TX
So
VC3 VC3
8DG 07734 AAAA Edition 01
HPT
HPT
So
So
HPT
So
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